在大于18—21°的陡阳坡(南坡、东南坡及西南和东坡的一部分)上造林种草是十分困难的。许多乔灌木树种都不能忍受陡阳坡的强日照、高温及干旱。干旱年里,陡阳坡的人工林经常大量死亡。例如在干旱的1963年里,切尔里戈夫州的一些农庄的人工林死亡了,而且有一部分是在前两年死亡的。陡阳坡生草度弱,容易遭受融雪水及暴雨的冲 It is very difficult to grow grass on steep sunny slopes (south slope, southeast slope, part of southwest and east slope) larger than 18-21 °. Many trees and shrubs can not tolerate the strong sunny, hot and drought steep sunny slope. In dry years, plantations on steep sunny slopes often die in large numbers. In 1963, for example, plantations in some farms in Cheligov were dead, and some died in the previous two years. Steep sunny slopes grassy, ​​vulnerable to snow melt water and heavy rain washed